US2842354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smelting furnace system
Assignee: Stockey & Schmitz
•
Filing: 1955-10-19
•
Granted: 1958-07-08
•
Expires: 1975-10-19
Abstract
No abstract record available.
Inventors
- 👤 Hohne Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:56
CPC Classifications
C; C21; C21C; C21C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119540A
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US1198434A
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GB176805A
Cited
US1865491A
Cited
DE534575C
Cited
US2343336A
Cited
US2209153A
Cited
US2400362A
Cited
US2494501A
Cited
US2565959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |